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Bedroom light switch, two of them but only on works to turn on the lights. There is a socket below it, and it gets it's power wires from this light switch box. The socket below has green and blue wires. There is no consistent color.

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    What part of the world is this in? – RedGrittyBrick Dec 7 '17 at 21:40
  • JUST A GUESS. since the yellow jumper wire is between two green wires i would think that the green is constant power and the red are the common wires. I do not see the blue wire making any connection in the box, just passes through. Disclaimer: i am not an electrician-er, i just play one one the internet. Please seek professional advice. – Alaska Man Dec 7 '17 at 21:52
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    Those strands sticking out the side are a little terrifying, especially since that looks like an ungrounded metal box... – Hari Ganti Mar 14 '18 at 21:34
  • Can you provide us a photo that shows where the wires exit the back of the box? – ThreePhaseEel Mar 14 '18 at 22:31
  • @Hari Ganti I think the strands are insulation not wires. I would guess this is in the U.K.? But I have seen all green wiring in 1950's school buildings. But the lugs don't look like U.L. types I have ever used in the U.S. – Ed Beal May 14 '18 at 20:49
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Without putting a meter on it. Yellow wire is a jumper to share power. The feed into the switch looks like one of the green wires but I cannot tell u which one is coming in and which one would be going out. Each of the reds look like your switched legs that are going to two separate lighting situations.

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Switches looks like BTicino Magic, green looks like a common (passing trough), reds like 'controlled' loads.

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